High severity7.5NVD Advisory· Published Jun 22, 2026· Updated Jul 9, 2026

CVE-2026-8858

Description

IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to remote code execution and denial of service in the WebSphere Web Server Plug-in component. This vulnerability can be exploited when an attacker impersonates the application server and sends crafted responses to the plug-in.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

IBM/I
cpe:2.3:a:ibm:i:*:*:*:*:*:*:*:*
Range: >=7.3,<=7.6
IBM/Websphere Application Server Libertyllm-fuzzy
IBM/WebSphere WebServer Plug-inllm-fuzzy
IBM/Websphere Application Serverllm-fuzzy

Patches

Vulnerability mechanics

References

www.ibm.com/support/pages/node/7276560nvd

News mentions

IBM WebSphere: Eight Vulnerabilities Including DoS, SSRF, and RCE Disclosed Together
Vypr Intelligence · Jun 22, 2026

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